Tides Today & Tomorrow in Hyannis Harbor, MA

TIDE TIMES for Tuesday, July 21, 2026
The tide is currently falling in Hyannis Harbor, MA.
Next low tide (tomorrow) : in 5h 30m at 12:46 am (0.6 ft)
Next high tide (tomorrow) : 7:37 am (3.1 ft)
Sunset today : 8:09 pm
Sunrise tomorrow : 5:25 am
Moon phase : First Quarter (52% illuminated)
Tide Station Location : Station #8447605
Common Questions About Tides

Hyannis Harbor, MA Tides - Dec 2059

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon9:173.49:532.82:180.73:020.56:484:11Waning Crescent1Mon
2Tue9:563.510:382.83:020.73:480.36:494:11Waning Crescent2Tue
3Wed10:353.611:232.83:450.74:330.16:504:11New Moon3Wed
4Thu11:153.74:280.75:180.06:514:11New Moon4Thu
5Fri12:072.811:56 AM3.85:110.76:05-0.16:524:10New Moon5Fri
6Sat12:512.712:393.85:570.76:52-0.16:534:10New Moon6Sat
7Sun1:342.71:233.96:440.77:39-0.26:544:10Waxing Crescent7Sun
8Mon2:192.72:103.87:330.68:26-0.26:554:10Waxing Crescent8Mon
9Tue3:062.83:003.88:240.69:15-0.26:564:10Waxing Crescent9Tue
10Wed3:572.83:553.79:180.510:04-0.16:574:10First Quarter10Wed
11Thu4:513.04:543.610:150.510:55-0.16:574:10First Quarter11Thu
12Fri5:443.25:553.411:160.411:460.06:584:10First Quarter12Fri
13Sat6:363.56:563.312:180.26:594:11First Quarter13Sat
14Sun7:293.87:593.212:380.01:210.17:004:11Waxing Gibbous14Sun
15Mon8:224.09:033.11:310.12:24-0.17:004:11Waxing Gibbous15Mon
16Tue9:164.210:043.12:240.23:24-0.37:014:11Waxing Gibbous16Tue
17Wed10:094.311:023.13:170.24:20-0.47:024:12Full Moon17Wed
18Thu11:014.411:583.04:090.35:13-0.47:024:12Full Moon18Thu
19Fri11:534.34:590.36:05-0.47:034:12Full Moon19Fri
20Sat12:513.012:444.25:500.46:56-0.37:034:13Full Moon20Sat
21Sun1:413.01:334.16:410.57:43-0.27:044:13Waning Gibbous21Sun
22Mon2:302.92:213.87:320.68:28-0.17:044:14Waning Gibbous22Mon
23Tue3:192.93:103.68:210.79:110.17:054:14Waning Gibbous23Tue
24Wed4:092.94:013.49:100.79:530.27:054:15Waning Gibbous24Wed
25Thu4:582.94:533.110:000.810:360.47:064:16Third Quarter25Thu
26Fri5:422.95:452.910:530.811:180.57:064:16Third Quarter26Fri
27Sat6:243.06:362.811:460.87:064:17Third Quarter27Sat
28Sun7:053.17:282.712:020.612:390.77:074:18Third Quarter28Sun
29Mon7:473.28:222.612:470.61:330.57:074:18Waning Crescent29Mon
30Tue8:313.39:142.61:330.72:260.47:074:19Waning Crescent30Tue
31Wed9:153.510:052.52:210.73:160.27:074:20Waning Crescent31Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8447605)

Common Questions About Hyannis Harbor, MA Tides

Show All
What time does the tide turn (slack tide) in Hyannis Harbor, MA today?

Slack tide in Hyannis Harbor, MA is approximately 4:11 am — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

Is this week a spring tide or neap tide in Hyannis Harbor, MA?

Hyannis Harbor, MA is currently in a neap phase. Tonight's moon is 52% illuminated. Spring tides (largest swings) occur near new and full moons; neap tides (smallest swings) occur near first and third quarter moons. Tidal ranges this week are near their weekly minimum.

What datum are Hyannis Harbor, MA tide heights measured from?

Tide heights on this page are measured from Mean Lower Low Water (MLLW), the U.S. NOAA standard. A height of 0 ft represents the 19-year average of each day's lower low tide. Negative values indicate a "minus tide" — water levels below that long-term reference.

What factors can affect the tide predictions for Hyannis Harbor, MA?

Tide predictions for Hyannis Harbor, MA come from NOAA's harmonic analysis and are typically accurate within about ±10 minutes on timing and ±0.5 ft on height. Actual water levels can deviate further due to sustained winds, atmospheric pressure changes, river flow, and storm surge. During major weather events, be sure to check US Harbors weather pages for factors that could impact tidal predictions.

Which NOAA station provides tide data for Hyannis Harbor, MA?

Tide data for Hyannis Harbor, MA is sourced from NOAA Station #8447605. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8447605.

What is the moon phase in Hyannis Harbor, MA tonight?

Tonight the moon over Hyannis Harbor, MA is First Quarter (52% illuminated). This places Hyannis Harbor, MA in a neap tide cycle, so tidal ranges are near their weekly minimum this week.

US Harbors Tidal Data

The data in our tide charts, tide tables, and tide graphs is provided by NOAA and others. These predictions are derived mathematically from numerous inputs, including data from historical tide stations and nearby locations where sensors are actively recording. As shown in the tide graph at the top of this page, “Predicted” tides (blue) are what forecasting models expect to happen. “Observed” tides (red) are those recorded by local sensors in real time, overlaid on the predictions for direct comparison. We display Observed water levels for a select group of harbors including Portland, Maine, where a physical sensor monitors water levels in real time.

LEARN MORE ABOUT OUR TIDE DATA